Airwell YCV280, Installation And Maintenance Instructions Manual

Page: 276 / 412

5. Refrigerant charging and additional charging
Remarks:
A. Charging amount when out of factory excludes the refrigerant in the pipe.
B . Additional charging amount=actual length of liquid pipe*additional amount per meter liquid pipe
Additional charging amount=L1*0.35+L2*0.25+L3*0.17+L4*0.11+L5*0.054+L6*0.022
L1: total length of 22.22 liquid pipe L2: total length of 19.05 liquid pipe
L3: total length of 15.88 liquid pipe L4: total length of 12.7 liquid pipe
L5: total length of 9.52 liquid pipe L6:total length of 6.35 liquid pipe
Model 22.22 19.05 15.88 12.7 9.52 6.35
0.35 0.25 0.17 0.11 0.054 0.022
additonal refrigerant charging per meter(kg/m)
charge when
out of factory
12kg
14.5kg
11kg
12kg
Tighten torque as the table below:
less than 7
7.85 (MAX15.7)
4.9 (MAX11.8)
less than 30
29.4 (MAX39.2)
16.2 (MAX24.5)
13
8.8 (MAX14.7)
8.8 (MAX14.7)
shaft (valve body) cap (cover) T-shape nut (check joint)
Tighten torque N.m
for gas pipe
for liquid pipe
for oil equalization pipe
Open/close method:(The gas pipe stop valve for
Take down the valve cap, gas pipe turns to "open"
state as right figure.
Turn the liquid pipe and the oil equalization pipe
with hexangular spanner until it stops. If opening
the valve strongly, the valve will be damaged.
Tighten the valve cap.
Note: The gas pipe stop valve for AV08NMVESA AV10NMVESA is screw type, rotate the rod
clockwise totally, the valve is close; rotate the rod counterclockwise totally, the valve is open; if
the rod is not rotated clockwise totally and also not rotated counterclockwise totally, the check
valves of indoor, outdoor and the stop valve are connected.
"open"state
"close"state
. Check valve operation
6
YCV280
YCV335
YCV400
YCV450
YCV335 YCV400 YCV450
282